<!--除登录页以外所有页面的父级页面,编写共有的左侧菜单栏与头部-->
<template>
  <!-- display:flex;给父容器使用弹性布局可以使所有子元素横置靠左排列 -->
  <div style="display: flex;">
    <div :style="{ width:(isCollapse ? '64px' : '208px')}">
      <!-- 左侧菜单栏 -->
      <!-- :collapse="isCollapse"左侧菜单栏是否折叠交给isCollapse变量来控制     -->
      <!-- unique-opened只允许同时打开一项菜单项    -->
      <el-menu
          style="width: 100%;height: 100vh;"
          :collapse-transition="false"
          active-text-color="#87B4CC"
          background-color="#3c82f5"
          :collapse="isCollapse"
          @select="selectMenu"
          text-color="#fff"
          unique-opened
          router
      >
        <!--  左侧菜单栏顶部条  -->
        <el-row style="padding-top: 10px;">
          <el-col :span="2"></el-col>
          <el-col :span="7" style="padding-left: 7px">
            <el-avatar src="/imgs/admin/logo.png" style="width: 35px;height: 35px;"></el-avatar>
          </el-col>
          <el-col :span="isCollapse ? 0 : 13">
            <router-link style="color: #fff;font-weight: bold;text-decoration: none;position: relative;top: 8px;left: 2px;"
                         to="/">
              智慧车辆
            </router-link>
          </el-col>
        </el-row>
        <el-sub-menu index="1">
          <template #title>
            <el-icon style="font-size: 21px;"><User/></el-icon><span>用户管理</span>
          </template>
          <el-menu-item index="/user">用户列表</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="2">
          <template #title>
            <el-icon style="font-size: 21px"><Van/></el-icon><span>车辆管理</span>
          </template>
          <el-menu-item index="/vehicle">基本信息</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="3">
          <template #title>
            <el-icon style="font-size: 21px">
              <Place/>
            </el-icon>
            <span>调度管理</span>
          </template>
          <el-menu-item index="/application">申请列表</el-menu-item>
          <el-menu-item index="/audit">调度审核</el-menu-item>
          <el-menu-item index="/distribute">车辆分配</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="4">
          <template #title>
            <el-icon style="font-size: 21px">
              <Location/>
            </el-icon>
            <span>电子围栏</span>
          </template>
          <el-menu-item index="/geofence">围栏管理</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="5">
          <template #title>
            <el-icon style="font-size: 21px">
              <MessageBox/>
            </el-icon>
            <span>数据字典</span>
          </template>
          <el-menu-item index="/dict">字典管理</el-menu-item>
        </el-sub-menu>
      </el-menu>
    </div>
    <div :style="{width:( isCollapse ? 'calc(100% - 64px)' : 'calc(100% - 208px)') }">
      <!--   顶部菜单栏   -->
      <el-header style="height: 10vh;background-color: #fff;padding-top: 22px;">
        <el-row :gutter="10">
          <el-col :span="18">
            <el-icon style="font-size: 20px;" @click="changeCollapse">
              <Expand/>
            </el-icon>
          </el-col>
          <el-col :span="6" style="position: relative;">
            <el-dropdown trigger="click" style="position: absolute;right: 20px;">
              <span style="font-size: 19px;font-weight: bold;">
                {{user.username}}
                <el-icon><arrow-down/></el-icon>
              </span>
              <template #dropdown>
                <el-dropdown-menu>
                  <el-dropdown-item @click="logout">退出登录</el-dropdown-item>
                </el-dropdown-menu>
              </template>
            </el-dropdown>
          </el-col>
        </el-row>
        <!--   面包屑导航    -->
        <el-breadcrumb separator="/" style="position: relative;top:20px;">
          <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
          <el-breadcrumb-item v-for="item in breadcrumb">{{item}}</el-breadcrumb-item>
        </el-breadcrumb>
      </el-header>
      <!--   右侧主体内容   -->
      <el-main style="height: 90vh;padding: 0;overflow-y: auto;">
        <router-view/>
      </el-main>
    </div>
  </div>
</template>

<script setup>

import {ref} from "vue";

//定义变量控制菜单是否折叠
const isCollapse = ref(false);
//定义修改菜单栏折叠状态
const changeCollapse = () => {
  isCollapse.value = !isCollapse.value;
}
//获取当前登录的用户对象
const user = ref (getUser());
//定义退出登录功能
const logout =()=>{
  if(confirm("是否退出登录?")){
    localStorage.removeItem('user');
    localStorage.removeItem('breadCrumb');
    window.location.href = '/login';
    user.value = '';
  }
}
const breadcrumb = ref(JSON.parse(localStorage.getItem('breadCrumb'))||['用户管理','用户列表']);
let map = {
  "/user":['用户管理','用户列表'],
  "/vehicle":['车辆管理','基本信息'],
  "/application":['调度管理','申请列表'],
  "/audit":['调度管理','调度审核'],
  "/distribute":['调度管理','车辆分配'],
  "/geofence":['电子围栏','围栏管理'],
  "/dict":['数据字典','字典管理']
}
const selectMenu =(index) =>{
  breadcrumb.value = map[index];
  localStorage.setItem('breadCrumb',JSON.stringify(breadcrumb.value));
}
</script>
